/*
 * @lc app=leetcode.cn id=509 lang=cpp
 *
 * [509] 斐波那契数
 */

// @lc code=start
class Solution {
public:
    int fib(int n) {
        if(n == 0)
            return 0;
        else if(n == 1)
            return 1;
        else 
            return fib(n-1) + fib(n-2);
    }
};
// @lc code=end

